KR20050085662A - Process for manufacture of personal care products utilizing a concentrate water phase - Google Patents

Abstract

A process which may be continuous is provided for manufacture of personal care product compositions. The process involves feeding a first water phase which is a concentrate containing most if not all water soluble ingredients of the composition into a blending tube. A second phase which can be oily or aqueous and a third water phase, the latter being essentially pure water, are also fed into the blending tube. All of the phases are transported through the tube at a flow rate of 5 to 5,000 lbs./minute and at a pressure of 10 to 5,000 psi. Preferably the tube leads into a homogenizer such as a sonolator.

Description

PROCESS FOR MANUFACTURE OF PERSONAL CARE PRODUCTS UTILIZING A CONCENTRATE WATER PHASE}

The present invention is directed to a method of making a liquid personal care product that minimizes equipment requirements, increases capacity, and reduces manufacturing time.

Among the most widely used types of liquid personal care products are shampoos, shower gels and skin lotions. Typically, each of these products is sold in a variety of colors with different fragrances and facilitation ingredients. More effective methods for their manufacture are constantly being investigated.

In particular, systems are studied that can minimize equipment, increase capacity, and reduce manufacturing time.

In a first aspect, the present invention,

(i) feeding a first aqueous phase having a viscosity of about 50 to about 30,000 cps into the compounding tube;

(ii) feeding a second phase into the compounding tube;

(iii) feeding a third phase of at least about 15% of the composition and having a viscosity of less than 30 cps into the compounding tube;

(iv) mixing all three phases together, each pumped into the compounding tube as a liquid stream at a pressure of about 10 to about 5,000 psi and a flow rate of about 2.274 to about 2,270 kg (5 to about 5,000 pounds) per minute; ;

(v) a method of making a personal care composition comprising recovering the final mixture as a personal care composition.

Advantages and features of the present invention will become more apparent with reference to the following drawings.

1 is a schematic representation of a first embodiment according to the present invention.

2 is a schematic representation of a second embodiment according to the present invention.

It has now been found that significant manufacturing efficiencies for the preparation of personal care compositions can be achieved. Advances are based on the first aqueous phase concentrates incorporating most of the optional water soluble ingredients found in the final personal care composition. The concentrate is then combined with the second phase. If the final personal care composition is an emulsion such as a skin cream, the second phase is an oil phase. Other products that do not contain an oil phase, for example shampoos, are prepared with a second phase that is aqueous and formulated with one or more surfactants. The third phase provides additional water. Usually the third phase is purely water, but can sometimes contain small amounts of additional components.

All three phases are combined in a tube. For the purposes of this invention, the term "mixing tube" may include any chamber, vessel and tubing in which all three phases meet and mix. Typically the volume of the compounding tube is relatively small. The volume is about 0.0016387 to 1638.7 cm ³ (0.0001 to about 100 cubic inches), preferably about 0.016387 to 327.74 cm ³ (0.001 to about 20 cubic inches), more preferably about 0.16387 to 81.94 cm ³ (0.01 to about 5 cubic inches), optimally from about 1.6387 to 16.387 cm ³ (0.1 to about 1 cubic inch).

Although large amounts of water are removed from the first aqueous phase concentrate, most of the water soluble components can still be placed in solution or suspension. An advantage is found in holding / blending tanks that can be significantly miniaturized over traditional non-concentrating methods. Less mixing equipment is required and less tank space is required. An additional third (water) phase form of top-off water reconstitutes the concentrate at the time of mixing. Typically no holding tank or mixer is required to prepare the third (water) phase. The phase may be pumped directly into the compounding tube from any water source, for example a well or tap water carrier.

The viscosity of the first aqueous phase concentrate is much higher than the viscosity of the third (water) phase. More specifically, the first water phase is about 50 to about 30,000 cps, preferably about 150, as measured on a Brookfield RVT Viscometer, Spindle RV6 at a speed of 20 rpm for 1 minute at 25 ° C. To viscosities ranging from about 20,000 cps, optimally about 300 cps to about 5,000 cps.

Typically the third (water) phase is substantially free of other additives. The viscosity of the phase is typically less than 5 cps, preferably about 1 to 4 cps, as measured on a Brookfield RVT viscometer, spindle RV6 at a speed of 20 rpm for 1 minute at 25 ° C.

1 is a schematic flowchart of a method according to the invention. The concentrated first water phase 2 is formulated in a tank 4. Reconstitution of the concentrate may require 2 to 50 times the amount of pure water by weight to obtain the desired composition. The first phase is conveyed through the tubing through the pump 6 to the blending tube 8.

The second phase 10 stays in the tank 12. If the desired composition is a skin hygiene product, the formulation is often an emulsion that requires a water and oil phase. In this case, the second phase is an oil phase. Products such as shampoos and shower gels often do not require an oily phase. For products of this type, the second phase will be aqueous and typically provide one or more surfactants. The level of surfactant in shampoos and shower gels is generally above 10%. As a result, this type of product can be used with an aqueous second phase, which may comprise a total surfactant level in the range from about 15% to about 90% by weight, preferably from about 25% to about 75% by weight of the second phase. Can be.

The delivery of the second phase into the compounding tube is mediated by the pump 14. Typical pumps may be Triplex Cat or Progressive Cavity pumps (eg Moyno / Seepex).

The third phase (16), which usually consists only of water but can sometimes contain some additives, is also fed into the compounding tube. Transported by a pump 18. This pump 18 can be a mono / cpex running cavity pump, a Waukesha or a positive displacement pump.

After leaving the compounding tube (8), the mixture of phases (2), (10) and (16) is operated as a homogenizer which completely mixes all phases together under high pressure and high shear (Sonolator®) ( Go to 20). The fluid obtained is then moved through the back pressure valve 22. Downstream of the three-way valve 24 leads most of the product directly to the storage tank or package charger 26. Usually a small amount of product is returned into regeneration storage 28 via a three-way valve to recycle through pump 30 into the stream of the first phase. The regeneration amount may range from 0 to 50%, preferably 1% to 20%, optimally about 5% of the total product exited from the blender tube to the sonor.

Typically the process involves the formation of a first water phase in a first reactor, in which the components are mixed and in a range of about 10 to about 70 ° C., preferably about 18 to about 58 ° C., optimally about 24 to about It is maintained at a temperature of 52 ℃. In most but not all cases, it is desirable to have the first phase at least about 5 ° C., preferably at least about 11 ° C. cooler than the second phase (particularly when the second phase is an oil) when intermixed. .

The second phase is formed in the reactor by mixing the components at a temperature in the range of about 10 to about 150 ° C, preferably about 40 to about 165 ° C, optimally about 66 to about 95 ° C.

The third phase may be maintained at a temperature of about 0 to about 57 ° C, preferably about 5 to about 45 ° C, optimally about 15 to about 38 ° C.

As measured by a Brookfield RVT viscometer, spindle RV6 at a speed of 20 rpm for 1 minute at 25 ° C., the viscosity of the second phase is about 50 to about 200,000 cps, preferably about 1,000 to about 100,000 cps, optimally about 5,000 to It may have a range of about 50,000 cps.

Usually the viscosity of the final personal care product is about 1,000 to about 30,000 cps, preferably about 5,000 to about 30,000 cps, using a Brookfield RVT viscometer, spindle RV6 at a speed of 20 rpm for 1 minute at 25 ° C. It may have a range of about 10,000 to 25,000 cps.

The transfer of fluid from the tank containing the first and second phases to the compounding tube 8 can be performed by a pair of electrically controlled servo-driven rotary pumps. The flow is carefully controlled by using a formulation valve available from Oden Corporation, which is monitored by an E & H mass flow meter. Equipment may include static mixing elements and back pressure valves.

The flow rate into the mixing tube 8 of the first and second phases may range from about 2.27 to 2,270 kg (5 to about 5,000 lbs.) Per minute. Preferably the flow rate may range from about 22.7 to 454 kg (50 to about 1,000 lbs.) Per minute, optimally from about 68.10 to 363.20 kg (150 to about 800 lbs.) Per minute.

The structure of the compounding tube 8 ranges from about 0.0001 seconds to about 5 minutes, preferably from about 0.001 to about 120 seconds, optimally from about 0.01 to about 10 seconds, for the residence time of the blended first, second and third phases. It must have a structure that can have

In systems where the second phase is an oil, the temperature of the emulsion in the compounding tube 8 should usually be lower than the temperature of the second (oil) phase when the second (oil) phase leaves its reactor tank. Typical emulsion temperatures in the compounding tube 8 range from about 10 to about 82 ° C, preferably from about 27 to about 65 ° C, optimally from about 35 to about 55 ° C.

In a preferred embodiment, both the oil and the water phase (both the first and third phases) are relatively in the range of about 10 to about 5,000 psi, preferably about 100 to about 1000 psi, optimally about 150 to about 250 psi. Pumped at high pressure.

In one embodiment of the invention, the oil and the first water phase are transported from their respective reactors via a positive displacement feed pump, such as a walkshaft PD gear pump. The separate phases are then delivered via a high pressure pump, such as a triple plunger type, each available from Giant Corporation (Toledo, Ohio) or Cat Corporation. From there, separate water phases and oil phases are each fed into the compounding tube 8, in which the compounding tube 8 is a sonor (registered) available from Sonic Corporation, a member of General Signal. Trademarks).

Sonor® is a tandem device capable of converting the kinetic energy of a high velocity stream of liquid into a high intensity mixing action. Switching is by pumping the liquid through the hole against blade obstructions in the jet stream of liquid. The liquid itself vibrates in a stable vortex pattern, which in turn causes the blade-shaped obstacles to resonate, causing a high level of cavitation, turbulence and shear. Blades or knives cause ultrasonic vibrations by fluid movements that cause cavitation in the liquid.

Alternative high pressure feed homogenizers other than sonarators are Manton Gaulin type homogenizers available from APV Manton Corporation and microfluidizers available from Microfluidics Corporation. High pressure homogenizers of this type contain a valve that presses (either hydraulically or by spring) a fixed valve seat. Under high pressure, the fluid flows through the holes in the seat and then through the gap between the valve and the seat. Although the structures of the different high pressure homogenizers may be different in detail and may be rough with sharp edges, all of them are generally similar. Often the high pressure homogenizer may consist of two or more valve-seat combinations.

The weight ratio of the first aqueous phase (concentrate) to the third (water) phase depends on the type of personal care composition and the particular formulation component. The weight ratio may range from about 1: 1 to about 1:40, preferably from about 1: 1 to about 1:10, optimally from about 1: 1 to about 1: 6.

The first and second phases may be present in a weight ratio ranging from about 50: 1 to about 1:50, preferably from about 10: 1 to about 1:10.

Typically the third phase can consist solely of water. In some cases, however, the phase may contain small amounts of additives. Usually the amount of these additives constitutes up to 10% by weight, preferably up to 5% by weight, optimally up to 2% by weight of the third phase. In contrast, the first aqueous phase (concentrate) generally comprises more than 5%, preferably more than 10%, most preferably more than 15%, and optimally more than 40% by weight of components other than water. can do.

FIG. 2 illustrates a method slightly modified from that described by FIG. 1. The modification involves adding a thickener in water as the fourth phase 32 through the pump 34 into the compounding tube. Typically, thickeners can be formulated through the first phase. However, some types of end products need to be exceptionally viscous. In this case, it is found that the separate phase is more effective at incorporating relatively large amounts of thickeners.

Personal care compositions according to the present invention may include shampoos, shower gels, liquid hand cleansers, liquid tooth compositions, skin lotions and creams, hair colorants, face cleansers, and infiltrating fluids absorbed on wiping articles.

In general, the first phase and / or the second phase may contain a surfactant. Useful surfactants include nonionic, anionic, cationic, amphoteric, zwitterionic surfactants and combinations thereof. The total amount of surfactant may range from about 0.1% to about 50% by weight of the total personal care composition, preferably from about 2% to about 40% by weight, optimally from about 15% to about 25% by weight. Can be.

Examples of suitable nonionic surfactants include, but are not limited to, C ₁₀ -C ₂₀ fatty alcohols or acidic hydrophobic materials (condensed with 2 to 100 moles of ethylene oxide or propylene oxide per mole of hydrophobic material); C ₂ -C ₁₀ alkyl phenol condensed with 2 to 20 moles of alkylene oxide; Mono- and di-fatty acid esters of ethylene glycol such as ethylene glycol distearate; Fatty acid monoglycerides; Sorbitan mono- and di-C ₈ -C ₂₀ fatty acids; Polyoxyethylene sorbitan, available as Polysorbate 80 and Tween 80®, as well as any combination of the above surfactants.

Other useful nonionic surfactants include alkyl polyglycosides (APGs), saccharide fatty amides (eg, methyl gluconamide) as well as long chain tertiary amine oxides. Examples of the class of tertiary amine oxides include dimethyldodecylamine oxide, oleyldi (2-hydroxyethyl) amine oxide, dimethyloctylamine oxide, dimethyldecylamine oxide, dimethyltetradecylamine oxide, di (2-hydroxy Ethyl) tetradecylamine oxide, 3-didodecyloxy-2-hydroxypropyldi (3-hydroxypropyl) amine oxide, and dimethylhexadecylamine oxide.

Examples of anionic surfactants include, but are not limited to, the following compounds.

(1) Alkyl benzene sulfonates wherein the alkyl group contains 9 to 15 carbon atoms, preferably 11 to 14 carbon atoms, in a straight or branched chain structure. Particular preference is given to linear alkyl benzene sulfonates containing about 12 carbon atoms in the alkyl chain.

(2) Alkyl sulfates obtained by sulfated alcohols having 8 to 22 carbon atoms, preferably 12 to 16 carbon atoms. Alkyl sulfate has the formula ROS0 ₃ ^- has a - M ⁺ (Im and / or divalent cations of the formula, wherein R is a C _8-22 alkyl group and M is a monovalent).

(3) Paraffin sulfonates wherein the alkyl moiety has 8 to 22 carbon atoms, preferably 12 to 16 carbon atoms.

(4) Olefin sulfonates having 8 to 22 carbon atoms, preferably 12 to 16 carbon atoms. Most preferred is sodium C ₁₄ -C ₁₆ olefin sulfonate, available as Bioterge AS 40®.

(5) Alkyl ether sulfates derived from alcohols having 8 to 22 carbon atoms, preferably 12 to 16 carbon atoms, ethoxylated to less than 30 moles, preferably less than 12 moles of ethylene oxide. Most preferred is sodium lauryl ether sulfate, formed with 2 molar average ethoxylation, commercially available as Standopol ES-2®.

(6) Alkyl glyceryl ether sulfonates with alkyl moieties having from 8 to 22 carbon atoms, preferably from 12 to 16 carbon atoms.

(7) Formula R ¹ CH (SO ₃ -M ⁺ ) CO ₂ R ² , wherein R ¹ is a linear or branched alkyl of about C ₈ to C ₁₈ , preferably C ₁₂ to C ₁₆ , and R ² Is about C ₁ to C ₆ , preferably mainly C ₁ linear or branched alkyl, and M ⁺ represents a monovalent or divalent cation.

(8) secondary alcohol sulfates having 6 to 18, preferably 8 to 16 carbon atoms.

(9) Fatty acyl isethionates having 10 to 22 carbon atoms. (Sodium cocoyl isethionate is preferred.)

(10) Mono- and dialkyl sulfosuccinates having alkyl groups in the range of 3 to 20 carbon atoms each.

(11) the formula RCON (CH ₃ ) CH ₂ CH ₂ CO ₂ M, wherein R is alkyl or alkenyl having from about 10 to about 20 carbon atoms and M is a water soluble cation such as ammonium, sodium, Alkanoyl sarcosinate corresponding to potassium and trialkanol ammonium. Sodium lauroyl sarcosinate is most preferred.

Examples of cationic surfactants include C ₈ -C ₂₂ alkyl C ₁ -C ₄ di-alkyl ammonium salts such as cetyl dimethyl ammonium chloride, stearyl dimethyl ammonium methosulfate, oleyl diethylammonium phosphate, and lauryl Dimethyl ammonium borate. Particular preference is given to cetrimonium chloride, a common name for cetyl dimethyl ammonium chloride.

Useful as amphoteric surfactants for the present invention has the formula _{^{RN + (R 1) 2 R}} 2 -COO - will include a betaine having the formula, R has 10 to 22 carbon atoms, preferably from 12 to Alkyl groups containing 18 carbon atoms; From the group consisting of alkyl aryl and aryl alkyl groups containing benzene rings treated to equivalent to about two carbon atoms and containing from 10 to 22 carbon atoms, and similar structures in which amido or ether bonds are inserted; And a hydrophobic moiety selected, each R ¹ is an alkyl group containing 1 to 3 carbon atoms, and R ² is an alkylene group containing 1 to about 6 carbon atoms. Also suitable are sulfobetaines, such as cocoamidopropyl hydroxysultine.

Examples of preferred betaines are dodecyl dimethyl betaine, cetyl dimethyl betaine, dodecyl amidopropyldimethyl betaine, tetradecyldimethyl betaine, tetradecylamidopropyldimethyl betaine, and dodecyldimethylammonium hexanoate. . tea. Most preferred is cocoamidopropyl betaine, available as Tegobetaine F (R), available from Th. Goldschmidt AG (Germany).

Polyols are often present in the aqueous phase of the present invention. Typical polyhydric alcohols include glycerol (also known as glycerin), polyalkylene glycols and more preferably alkylene polyols and derivatives thereof (including propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol and derivatives thereof), sorbitol, hydride Oxypropyl sorbitol, hexylene glycol, butylene glycol, 1,2,5-hexanetriol, ethoxylated glycerol, propoxylated glycerol and mixtures thereof. Glycerin is most preferred. The amount of polyol ranges from about 0.5% to about 50%, preferably from about 1% to about 15% by weight of the total personal care composition.

 In addition, from about 0.01% to about 10% by weight thickener / viscosifier of the total personal care composition may be included in the first aqueous phase and / or in a separate fourth phase. As is known to those skilled in the art, the exact amount of thickener may vary depending on the consistency and concentration of the desired composition. Exemplary thickeners include xanthan gum, sodium carboxymethyl cellulose, hydroxyalkyl and alkyl celluloses (especially hydroxypropyl cellulose), and B.F. Cross-linked acrylic acid polymers such as those sold under the Carbopol trade name by the company B.F. Goodrich.

Thickeners such as modified starch and clays can also be used to enrich the aqueous phase. For example, aluminum starch octenyl succinate (available as DryFlo® from National Starch and Chemical Company) is particularly useful. Among the clays are magnesium aluminum silicates (available as Veegum®), hectorite clays, montmorillonite clays, bentonite (e.g. Benton® 38) and Combinations thereof.

Water soluble conditioning agents can also be incorporated into the water phase. The following cationic formulations in the form of monomers and polymers are particularly useful for this purpose. Cationic cellulose derivatives, cationic starch, copolymers of diallyl quaternary ammonium salts and acrylamides, quaternized vinylpyrrolidone vinylimidazole polymers, polyglycol amine condensates, quaternized collagen polypeptides, polyethylene imines, cationizations Cationic silicone polymers, adipic acid and dimethylaminohydroxypropyl, provided in admixture with other ingredients under the formulated silicone polymers (e.g., amodimethicone), under the tradename Dow Corning 929 (cationic emulsion) Copolymers of diethylenetriamine, cationic chitin derivatives, cationized guar gums (e.g. Jaguar® CBS, zaguar® C-17, and zaguar® ) C-16) and quaternary ammonium salt polymers (e.g. Mirapol® A-15, Mirapol, manufactured by Miranol Department of Rhone Poulenc Company) (Registered trademark ) AD-1, Mirapol® ZA-1).

Examples of cationic monomer conditioning agents are salts of the formula

Where

R ¹ is selected from alkyl groups having 12 to 22 carbon atoms, or aromatic, aryl or alkaryl groups having 12 to 22 carbon atoms,

R ² , R ³ , and R ⁴ are independently selected from hydrogen, alkyl groups having 1 to 22 carbon atoms, or aromatic, aryl or alkaryl groups having 12 to 22 carbon atoms,

X ⁻ is an anion selected from chlorine, bromine, iodine, acetate, nitric acid, sulfuric acid, methyl sulfate, ethyl sulfate, tosylate, lactylate, citrate, glycolate, and mixtures thereof. Additionally, the alkyl group may also include either a bond or an amino group substituent (eg, the alkyl group may include polyethylene glycol and polypropylene glycol moieties).

Compositions of the invention that are emulsions may be oil-in-water or water-in-oil, although the former is preferred. The relative weight ratio of the water phase to the oil phase of the emulsion is from about 1,000: 1 to about 1:10, preferably from about 100: 1 to about 1: 5, optimally from about 10: 1 to about 1: by weight of the total personal care composition. It may have a range of two.

Another component that is often present in the first water phase and sometimes in the other water phase (s) is a preservative. It is incorporated to protect against the growth of potentially harmful microorganisms. Suitable traditional preservatives are alkyl esters of EDTA salts and parahydroxybenzoic acid. Other preservatives recently used include hydantoin derivatives, propionate salts, and various quaternary ammonium compounds. Cosmetic chemists are familiar with appropriate preservatives and routinely select them to meet shelf life testing and provide product stability.

Particularly preferred preservatives are iodopropynyl butyl carbamate, phenoxyethanol, methyl paraben, propyl paraben, imidazolidinyl urea, sodium dehydroacetate and benzyl alcohol. Preservatives should be selected taking into account the use of the composition and possible incompatibilities between the preservative and other components in the composition. Preservatives are typically used in amounts ranging from 0.01% to 2% by weight of the total personal care composition.

The second phase when in the oil phase will contain a hydrophobic component. In the oil phase, emollients which may be selected from hydrocarbons, silicones and synthetic or vegetable esters will most often be incorporated. The amount of emollient may be in the range of about 0.1% to about 30%, preferably about 0.5% to about 10% by weight of the total personal care composition.

Suitable hydrocarbons for the present invention include hydrocarbon waxes such as isoparaffin, mineral oil, petrolatum and polyethylene.

Silicones can be divided into volatiles and non-volatiles. As used herein, the term “volatile material” refers to materials that have a vapor pressure measurable at ambient temperature. The volatile silicone oil is preferably selected from cyclic or linear polydimethylsiloxanes containing from about 3 to about 9, preferably from about 4 to about 5 silicon atoms.

Non-volatile silicones useful as emollients include polyalkyl siloxanes, polyalkylaryl siloxanes, and polyether siloxane copolymers. Essentially non-volatile polyalkyl siloxanes useful herein include, for example, polydimethyl siloxane having a viscosity of about 5 to about 100,000 centistox at 25 ° C.

Among the suitable ester emollients are the following compounds.

(1) Alkenyl or alkyl esters of fatty acids having 10 to 20 carbon atoms. Examples thereof include isopropyl, palmitate, isononyl isononoate, oleyl myristate, oleyl stearate, cetearyl stearate and oleyl oleate.

(2) ether-esters, such as fatty acid esters of ethoxylated fatty alcohols.

(3) polyhydric alcohol esters. Ethylene glycol mono- and di-fatty acid esters, diethylene glycol mono- and di-fatty acid esters, polyethylene glycol (200-6000) mono- and di-fatty acid esters, propylene glycol mono- and di-fatty acid esters, polypropylene glycol 2000 monooleate, polypropylene glycol 2000 monostearate, ethoxylated propylene glycol monostearate, glyceryl mono- and di-fatty acid esters, polyglycerol fatty esters, ethoxylated glyceryl monostearate, 1,3-butyl Lene glycol monostearate, 1,3-butylene glycol distearate, polyoxyethylene polyol fatty acid esters, sorbitan fatty acid esters, and polyoxyethylene sorbitan fatty acid esters are suitable polyhydric alcohol esters.

(4) wax esters such as beeswax, spermaceti, myristyl myristate, stearyl stearate.

(5) steroid esters, examples of which are soy sterols and cholesterol fatty acid esters.

Most preferred vegetable ester emollients are sunflower seed oil, soy sterol esters, borage oil, maleated soybean oil, sucrose polycottenseedate, tribehenin, sucrose polybehenate and mixtures thereof.

Fatty acids may also be included in the oil phase. The fatty acid may have 10 to 30 carbon atoms. Examples of this kind include pelagonate, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, linoleic acid, ricinoleic acid, arachidic acid, behenic acid and eruk There is a mountain. The amount can range from 0.1% to 25% by weight of the total personal care composition.

Perfume, pigment and facilitation ingredients may also be included in one of the oils and water phases. Examples of the dye of the present invention include red 4, red 40 and FD & C dye red 3, red 6, red 28, red 33, blue 1, green 5, yellow. No. 5 is included, all of which are water soluble. Fat soluble dyes such as Green No. 6 and D & C Violet No. 2 may also be used. The activity value of the pigments may range from about 0.0001% to about 1%, preferably from about 0.001% to about 0.1% by weight of the total personal care composition.

The term "fragrance" is defined as a mixture of aromatic ingredients, optionally mixed with a suitable solvent diluent or carrier, which is used to give the desired scent.

Perfume components and mixtures thereof include hydrocarbons, including saturated and unsaturated compounds, aliphatic compounds, cyclic carbon compounds and heterocyclic compounds, as well as natural products such as essential oils, absolutes, resins, resins and concrete. From synthetic products such as alcohols, aldehydes, ketones, ethers, carboxylic acids, esters, acetals, ketals, nitriles and the like.

Suitable solvents, diluents or carriers for the abovementioned fragrance components include, for example, ethanol, isopropanol, diethylene glycol monoethyl ether, dipropyl glycol and triethyl citrate.

Particularly preferred perfume components are cyclic and acyclic terpenes and terpenoids. The material is based on isoprene repeat units. Examples include alpha and beta pinene, myrcene, geranyl alcohol and acetate, campene, dl-limonene, alpha and beta pelandrenene, tricyclene, terpinolene, allosimman, geraniol, nerol, linanol, dihydro Lyrannool, Citral, Ionone, Methyl Ionone, Citronellol, Citronellal, Alpha Terpinol, Beta Terpinol, Alpha Fencol, Borneol, Isobornoneol, Camphor, Terpinene-1-ol, Ter Pin-4-ol, dihydroterpinol, methyl carbicol, anethol, 1,4 and 1,8 cineol, geranyl nitrile, isobornyl acetate, linalyl acetate, cariophylene, alpha seedene, guai Allols, paturi alcohols, alpha and beta xantol and mixtures thereof.

The amount of fragrance is about 0.00001% to about 2%, preferably about 0.0001% to about 1%, optimally about 0.01% to about 0.5%, most preferably about 0.05% by weight of the personal care composition. % To about 0.25% by weight.

Examples of accelerating ingredients are vitamins. These include vitamin A (retinol), vitamin A derivatives (retinyl palmitate, retinyl linoleate, retinyl acetate and retinic acid), vitamin C, vitamin C derivatives (e.g. ascorbyl tetraisopalmitate and Magnesium ascorbyl phosphate), vitamin E, vitamin E derivatives (eg tocopherol acetate), biotin, niacin and DL-panthenol and combinations thereof.

The amount of facilitation component may range from about 0.00001% to about 2%, preferably from about 0.0001% to about 1%, and optimally from about 0.001% to about 0.5% by weight of the total personal care composition. .

The mixed first and third water phases are from about 5% to about 99.5% by weight of the final personal care composition, preferably from about 20% to about 90% by weight, more preferably from about 35% to about 80% by weight. Optimally about 45% to about 70% by weight.

The mixed first and third water phases contain water as the main component. Typically the amount of water is from about 30% to about 99.9% by weight of the mixed first and third water phases, preferably from about 50% to about 95% by weight, more preferably from about 65% to about 80% by weight, Optimally, it may have a range of about 55% to about 70% by weight.

The term "comprising" is not meant to be limiting to all of the components described below, but to include unspecified elements that are functionally or less important. In other words, the listed steps, elements, or options need not be exhaustive. When the words "containing" or "having" are used, the terms have the same meaning as "comprising" as defined above.

In the examples and comparative examples, or except as explicitly indicated otherwise, all numbers in the present specification indicating the amount of substance are to be understood as being modified by the word "about".

The following examples will explain embodiments of the invention in more detail. All parts, percentages, and ratios mentioned herein and in the appended claims are by weight unless otherwise indicated.

Example 1

A pair of skin lotions was prepared to show concentration levels of 2X and 10X. The two concentrates containing the appropriate amount of added water resulted in the final composition shown in Table 1 below.

The oil phase and the water phase were contained separately in each of the first and second tanks. The phases were separately fed through pipes to an antechamber portion of the Sonorator® via a progressive cavity pump (e.g., MONO / SEPHEX) apparatus. The combined flow rate was maintained at 9.08 kg (20 lbs.) / Min at exactly 200 psi. The aqueous phase concentrate was maintained at a temperature of 24-52 ° C. in a 3,000 gallon tank. The oily phase was maintained at a temperature of 65-93 ° C. in a 250 gallon tank.

From the third tank, the 2X concentrate experimental apparatus delivered a third stream of pure water controlled at the same pressure as the first and oil phases. The pure phase was maintained at 15-38 ° C. and pumped to the side of the compounding tube of Sonor®. All phases were then homogenized together in Sonor® at 500 psi. The mixed streams were then sent to a storage vessel where the final product was maintained at 24 to 44 ° C. A portion of the final skin lotion composition was pumped into the formulation tube of Sonator® as a recovery stream by a positive displacement pump. The amount of the recovery stream was about 5% for a fresh start or as a regeneration product. Residue of the composition retained in the storage container was transferred to the packaging line to fill into the empty container.

The 10 × concentrate used a fourth stream of water / thickener (Carbopol 934®). The fourth stream was pumped into the mixing tube side of the Sonator® at a similar pressure and flow rate (proportional to its proportion in the final composition). All other methods are the same as described above for the 2X concentrate.

Example 2

One set of dry skin treatment lotions was prepared to show 2X, 4X and 6X concentration levels. All three concentrates, including the appropriate amount of added water, became the final composition shown in Table 2 below.

The oil phase and the water phase were contained separately in each of the first and second tanks. Using a progressive cavity pump (e.g., MONO / SEPHEX) apparatus, the phases were separately fed through pipes to the portion of the mixing tube side of the Sonator®. The combined flow rate was maintained at 22.7 kg (50 lbs.) / Min at exactly 800 psi. The aqueous phase concentrate was maintained at a temperature of 24-52 ° C. in a 5,000 gallon tank. The oily phase was maintained at a temperature of 65-93 ° C. in a 250 gallon tank.

From the third tank, the 2X concentrate experimental apparatus delivered a third stream of pure water controlled at the same pressure as the first and oil phases. The pure phase was maintained at 15-38 ° C. and pumped to the side of the compounding tube of Sonor®. All phases were then homogenized together in Sonor® at 1000 psi. The mixed stream was then sent to a storage vessel where the final product was maintained at 24 to 44 ° C. A portion of the final dry skin lotion composition was pumped into the formulation tube of Sonator® as a recovery stream by a positive displacement pump. The amount of the recovery stream was about 5% for a fresh start or as a regeneration product. Residue of the composition retained in the storage container was transferred to the packaging line to fill into the empty container.

Preparation of 4X and 6X concentrates is the same as described above for 2X concentrates.

Example 3

One set of shampoo formulations was prepared to show concentration levels of 2X, 4X and 8X. All three concentrates, including the appropriate amount of added water, became the final composition shown in Table 3 below.

Preparation of the shampoo was carried out in a similar manner as described under Example 2.

Example 4

One set of hair conditioners was prepared to show 2X, 4X and 8X enrichment levels. All of the concentrates containing the appropriate amount of added water resulted in the final composition shown in Table 4 below.

All procedures are the same as described under Example 2 for each concentrate.

Claims (12)

(i) feeding a first aqueous phase having a viscosity of 50 to 30,000 cps into the compounding tube; (ii) feeding a second phase into the compounding tube; (iii) feeding a third phase of at least 15% of the composition and having a viscosity of less than 30 cps into the compounding tube; (iv) mixing all three phases together, each pumped into the blending tube as a liquid stream at a pressure of 10 to 5,000 psi and a flow rate of 2.274 to 2,270 kg (5 to 5,000 pounds) per minute; (v) A method of making a personal care composition comprising recovering the final mixture as a personal care composition. The method of claim 1, wherein the first phase comprises more than 5% by weight of components other than water. The process according to claim 1 or 2, wherein the first phase comprises more than 40% by weight of components other than water. The process according to any one of claims 1 to 3, wherein the first and third phases are fed into the compounding tube in a relative weight ratio of 1: 1 to 1:40. The process according to any one of claims 1 to 4, wherein the first and third phases are fed into the compounding tube in a relative weight ratio of 1: 1 to 1:10. The production process according to any one of claims 1 to 5, wherein the third phase comprises not more than 10% by weight of components other than water. The production method according to any one of claims 1 to 6, wherein the third phase contains 2 wt% or less of the third phase other components than water. The method of claim 1, wherein the blending tube has a volume in the range of 0.0016387 to 1638.7 cm ³ (0.0001 to 100 cubic inches). The method of claim 1, wherein the blending tube has a volume in the range of 0.16387 to 81.94 cm ³ (0.01 to 5 cubic inches). 10. The process according to claim 1, wherein the phases are mixed by sonic stirring. The process according to claim 1, wherein the first phase entering the tube is at least 5 ° C. lower than the temperature of the second phase entering the tube. The method of claim 1, wherein the first, second and third phases are pumped into the tube at a pressure of 100 to 1,000 psi.